/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraTypes.h
Can convert struct data from custom structs containing LWC data such as FVector3d into struct data suitable for Niagara simulations and vice versa.
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)() struct FNiagaraLwcStructConverter